Watch the Major Blue online guitar lesson by Robbie Calvo from 50 R&B Licks You MUST Know
I love mixing up ideas and seeing what comes out. The majority of this lick is derived from the A blues scale but the nice twist is adding the major 3rd to the scale to outline the C# in the A7 chord.
You've heard this idea a lot in the blues, R&B and country genres. It's a classic.